... Tetrahedron Letters. Volume 47, Issue 46, 13 November 2006, Pages 8039–8042. Cover image Cover image. ... 2; K. Ravinder, AV Reddy, P. Krishnaiah, P. Ramesh, S. Ramakrishna, H. Laatsch, Y. Venkateswarlu; Tetrahedron Lett., 46 (2005), p. 5475. ...